Nat the Cat jumps out of bed with a smile spread halfway round his head. He's packed a delicious picnic to share with his friends, Billy Goat and Hugo Hare. But Billy and Hugo are both feeling down. They are just not in a picnicky mood. Nat carries on alone, but he soon finds that his smile is gone. Luckily, he's passed on his smile to his friends and they soon come along to cheer him right back up again!